198131065216 has 64 divisors (see below), whose sum is σ = 456170724000. Its totient is φ = 83959197696.

The previous prime is 198131065211. The next prime is 198131065217. The reversal of 198131065216 is 612560131891.

It is a tau number, because it is divible by the number of its divisors (64).

It is a super-3 number, since 3×198131065216³ (a number of 35 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198131065211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1162551 + ... + 1322038.

Almost surely, 2^198131065216 is an apocalyptic number.

198131065216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

198131065216 is an abundant number, since it is smaller than the sum of its proper divisors (258039658784).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

198131065216 is an equidigital number, since it uses as much as digits as its factorization.

198131065216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2484699 (or 2484687 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 43.

The spelling of 198131065216 in words is "one hundred ninety-eight billion, one hundred thirty-one million, sixty-five thousand, two hundred sixteen".